EP0640196B1 - Vorrichtung und Verfahren zum dosierten Zuführen von flüssigen oder viskosen Substanzen an eine Verbrauchsstelle - Google Patents

Vorrichtung und Verfahren zum dosierten Zuführen von flüssigen oder viskosen Substanzen an eine Verbrauchsstelle Download PDF

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Publication number
EP0640196B1
EP0640196B1 EP93909924A EP93909924A EP0640196B1 EP 0640196 B1 EP0640196 B1 EP 0640196B1 EP 93909924 A EP93909924 A EP 93909924A EP 93909924 A EP93909924 A EP 93909924A EP 0640196 B1 EP0640196 B1 EP 0640196B1
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EP
European Patent Office
Prior art keywords
piston
substance
container
point
delivery
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP93909924A
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German (de)
English (en)
French (fr)
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EP0640196A1 (de
Inventor
Eric Van Damme
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
    • F16N29/02—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems for influencing the supply of lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N13/00—Lubricating-pumps
    • F16N13/02—Lubricating-pumps with reciprocating piston
    • F16N13/04—Adjustable reciprocating pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2230/00—Signal processing
    • F16N2230/10—Timing network
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2270/00—Controlling
    • F16N2270/20—Amount of lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N27/00—Proportioning devices

Definitions

  • the present invention relates to a device and a method for the metered supply of liquid or viscous substances to a consumption point, and in particular to a device which is suitable for supplying liquid or viscous lubricants to a lubrication point.
  • the object on which the invention is based and its solution are described below by way of example with reference to the use of the device for supplying greases to a lubrication point.
  • the device according to the invention is equally suitable for also supplying liquid substances to a lubrication point and is also suitable for metered supply of liquid or viscous substances for purposes other than lubrication purposes.
  • One of these known individual lubricating devices uses a cavity, for example a cylinder, in which a lubricating grease is stored, which is slowly discharged through a throttle opening by means of a spring-loaded disk piston.
  • this known device has a number of disadvantages.
  • a further disadvantage is that the lubricant is under the pressure of the spring during the entire removal time, which can possibly take several months. With many lubricants, such a continuous load leads to segregation of the components of the lubricant, and in particular of the oil bound in the grease, which can have a significant adverse effect on the lubrication.
  • WO88 / 09899 and WO88 / 09900 propose a lubrication device which has a chamber for receiving the grease, which is separated from a second chamber by a movable separating insert, in which a gas-generating chamber Element, For example, a cell consisting of an electrolyte, anode and cathode is arranged. Due to the gas pressure, the grease is fed to the lubrication point via a throttle resistor.
  • a gas-generating chamber Element For example, a cell consisting of an electrolyte, anode and cathode is arranged. Due to the gas pressure, the grease is fed to the lubrication point via a throttle resistor.
  • Another major disadvantage of the known individual lubrication devices is the problem of assigning the delivery of the lubricant to the respective lubrication point. Since the individual lubrication points often have different quantity requirements for the lubricant, it is necessary to provide a corresponding number of individual lubrication devices. This not only complicates the storage of such lubricating devices, but there is also the risk that the individual lubricating devices will be mixed up, as a result of which an excess or, what is worse, an undersupply of the respective lubrication point takes place with the lubricant.
  • US-A-2,856,924 which was used to form the preamble of claim 1, shows a pump for supplying liquid lubricant to a plurality of consumption points, the supply being effected by means of restrictors.
  • the pump works with a piston slidably arranged in a cylinder, the stroke of which can be adjusted via a threaded adjusting element.
  • the present invention has for its object to provide a device and a method for the metered supply of liquid and viscous substances, which enables precise metering, which can be easily adapted to the requirements of the respective point of use, and in which one selected Dosage cannot be changed accidentally.
  • the method according to the invention is the subject of claim 18.
  • the device according to the invention has a conveying device through which the substance to be conveyed, which is located in a storage chamber, can be fed through a discharge opening to a consumption point.
  • the conveying device preferably has an energy store which can be moved by a movement device against an elastic restoring force from a first position with a lower restoring force to a second position with a higher restoring force.
  • the restoring force is so high that the substance is conveyed through the conveying device by this restoring force.
  • the device according to the invention furthermore has a control device which causes this movement device to operate at predetermined time intervals.
  • a spring which preferably interacts with a piston, is preferably used as the energy store.
  • the piston can deliver a precisely specified delivery volume and thus achieve an exact dosage.
  • the delivery piston preferably interacts with an end stop, through which the delivery volume is limited.
  • This end stop can preferably be changed so that the delivery volume can be adapted to the respective point of consumption.
  • This embodiment has particular advantages, since it provides a device which is largely independent of the procurement of the substance to be conveyed and the setting regardless of the ambient conditions a certain desired funding volume per unit of time.
  • the limitation by the end stop has the advantage that the end stop can be accommodated in a separate part of the device.
  • this part is directly connected to the point of consumption, that is, for example, screwed into the lubrication nipple bore of the lubrication point.
  • the point of consumption that is, for example, screwed into the lubrication nipple bore of the lubrication point.
  • End stops are made available to the users, which allow, for example, a feed duration of 100, 200, 300 and 400 days with the given chamber volume. The user then screws the part with the end stop correctly positioned for the respective point of consumption into the feed hole of the point of consumption. This ensures that the same amount of lubricant is pumped every time the grease is replaced or refilled.
  • the funding volume per unit of time can also be controlled by changing the time intervals in which the funding is triggered.
  • a separable part is also provided, which remains at the feed point and which has an adjusting element which indicates to the control device at what time intervals a delivery should take place.
  • Conveyor and moving device are designed so that the conveyor is automatically returned from this position with increased restoring force to the position with low restoring force.
  • the restoring force of the conveyor in the second position is always higher than the force required for conveying.
  • the movement device which effects the elastic restoration can be dimensioned relatively small and easily. This means a significant cost saving and a reduction in the size of the device.
  • An electric motor which is driven by a disposable battery or an accumulator is preferably used as the movement device.
  • a special coupling device can ensure that the required pretensioning of the energy store requires only a small motor force.
  • the device can be equipped with a transparent housing or transparent housing parts. This enables a simple visual inspection of the lubricant supply and the function.
  • a switching device can be provided in order to effect the execution of a conveying stroke for inspection purposes. This enables a function check to be carried out regardless of the funding intervals set.
  • This and also the other exemplary embodiments are a device for supplying grease to a lubrication point, in which the dosage of the lubricant to be supplied can be changed by a corresponding device.
  • the lubricating device 1 shown in FIGS. 1 to 3 has an essentially cylindrical housing, which consists of a cover part 2, a base part 3 and a lower part 4.
  • the housing is made entirely of plastic and, preferably, of transparent plastic.
  • the cover part and the lower part are screwed to the base part by a thread 6 and 7, respectively.
  • the cover part 2 has a cylindrical cavity 8, in which a plastic bag 10 is arranged, in which the fat to be dosed is contained.
  • the pouch is preferably made of a low density polyethylene.
  • the bag can be purchased from the lubricant supplier when closed. Instead, it is also possible that on-site, i.e. at the lubricant user, appropriately designed plastic bags are filled with the grease and then inserted into the cover part 2.
  • a plate 12 is shown, which is pressed onto the bag 10 via a conical spring 13 in order to achieve a certain pretension there.
  • the bias of the spring 13 is, however, such that only a small pressure, preferably about 0.5 bar, is exerted on the fat in the bag 10 by the spring.
  • the base part 3 like the cover part 2, is constructed essentially rotationally symmetrically around a cylinder axis 16 and is closed off by an upper circular plate 15 towards the cover part 2, the plate 15 having a multi-step opening 17.
  • a ring 22 is screwed or glued in, which has a sharp, offset edge 23 at the top. This ring serves to sever the plastic bag 10 with the fat supply when the cover part is screwed onto the base part.
  • a hollow cylindrical piston 30 is movably guided in the cylindrical inner surface 19 of the cylindrical tube piece 18.
  • the piston 30 has a first annular recess 32 in its upper region, in which a sealing ring 33 is inserted, and in its lower region a second cylindrical annular recess 35, in which a sealing ring 36 is inserted.
  • the piston is sealed off from the cylindrical inner surface 19 of the tube piece 18 by the sealing rings 33 and 36.
  • the piston 30 has a continuous inner bore 38 which widens towards the cover part 2 through a conical recess 39.
  • the opening 38 is widened by a first cylindrical recess 40 and this in turn by a second cylindrical recess 41.
  • a cylindrical sealing plate 42 made of rubber or plastic, which is pressed against the upper surface of the first by a spring (not shown) cylindrical recess is pressed.
  • a cylindrical pin 50 is fastened, for example by gluing.
  • the cylindrical axis of the pin 50 is arranged at an angle of 90 ° to the cylindrical axis 16.
  • the cylindrical tube piece 18 has a recess 52 which extends in the plane of the drawing in FIG. 1 and is arranged such that the piston 30 with the pin 50 can move up and down within the cylindrical inner surface 19.
  • a spring 54 is arranged between the plate 15 of the base part 3 and the pin 50, the upper end of which is guided in a step of the opening 17.
  • a stop limiter 60 is drawn separately from the base part 3.
  • the stop limiter 60 has a first screw-in connector 62, which is provided with an external thread and is dimensioned such that it can be screwed into the recess 20. Screwing in is facilitated by an external hexagon 63, which adjoins the first screw socket 62.
  • a second screw-in connector 64 is provided, the dimensions of which are selected such that this screw-in connector can be screwed into the bores of machines which serve to receive lubricating nipples.
  • the stop limiter 60 has a through bore 67, which is provided with a cylindrical extension 68 arranged in the first screw-in connector, the Diameter is at least slightly larger than the outer diameter of the piston 30.
  • a stop shoulder 69 is formed by the cylindrical recess 68.
  • the bore 67 has a downwardly opening conical extension 70, in which a steel ball 72 is received.
  • the steel ball 72 is pressed into the conical extension 70 by a spring 74, this spring 74 being supported on a screwed-in ring 76.
  • Conical recess 70, ball 72 and spring 74 form a ball valve.
  • an electric motor 80 is arranged in the base part 3, the drive shaft 81 of which is arranged parallel to the cylinder axis of the pin 50.
  • a drive pinion 82 is attached to the motor shaft 81 and meshes with a first gear 83 which is mounted on an axle 85 held by a carrier 84.
  • a second pinion 86 is connected in a rotationally fixed manner, the rotational movement of which is transmitted to a second gear 87, which is mounted on a shaft 88, which is also held in the carrier 84.
  • a third pinion 89 is arranged on the shaft 88 concentrically to the gear 87 and connected to it in a rotationally fixed manner, which drives a third gear 90, the rotation of which in turn is transmitted via a fourth pinion 91 concentric to this to a fourth gear 92, which is also rotatable is mounted about the axis 88.
  • the fourth gear 92 as can be seen in particular in the illustration according to FIG. 2, four cylindrical plunger pins 94, 95, 96, 97 are fastened, the outer diameter of which is approximately equal to the outer diameter of the cylindrical pin 50.
  • the plunger pins are on one Circle around the axis of rotation of the gear 92 and each have an angular distance of 90 °.
  • the pin 50, the gears and pinions and the tappet pins 94 to 97 are preferably made of metal, particularly preferably made of steel.
  • An electrical limit switch 99 is provided parallel to the plane of rotation of the gear 92 and can be actuated by the tappet pins 94 to 97.
  • three batteries 100 are arranged, which i.a. provide the energy to operate the motor 80.
  • the device is controlled by an electrical switching device which is only shown schematically in FIG. 4.
  • the voltage of the batteries 100 is fed to the motor 80 via a switching relay 101.
  • a control device 102 receives signals from a timer module 104, the limit switch 99 and a manually operated contact switch 106, which (preferably not shown) is preferably attached to the base part 3 and can be actuated from the outside, and a fuse switch 108 which also (not shown) on the lower part 4 is attached and switched on when the stop limiter 60 is screwed into the recess 20.
  • the lubrication device shown in the figures is intended to hold a bag 10 with 150 ml of grease.
  • the lubrication device can also be designed with larger and smaller volumes.
  • the stop limiter 60 is selected such that with (in the exemplary embodiment) two lubrication strokes per day at the lubrication point, the desired grease volume per day is fed.
  • the selected stop limiter 60 is screwed into the corresponding lubricant feed bore of the corresponding machine part with its second screw-in connector 64.
  • the base part 3 with the lower part 4 is then screwed onto the first screw-in socket 62 of the stop limiter 60.
  • a new or refilled bag 10 with the grease is placed on the plate 15 of the base part 3 and the cover part 2 is screwed on.
  • the punching ring 22 penetrates the bag 10 so that the bag is open to the inner bore 19 of the cylindrical tube piece and to the inner bore 38 of the piston 30.
  • the batteries 100 are replaced by new batteries or corresponding accumulators by freshly charged accumulators.
  • the safety switch 108 is activated by screwing in the stop limiter.
  • the timer module 104 is dimensioned in such a way that it gives a pulse to the control device 102 exactly every 12 hours, which causes the control device 102 to close the circuit through the switching relay 101 and to supply the motor 80 with energy.
  • the motor 80 is thereby rotated and drives the fourth gear 92 via the reduction gear consisting of the first, second, third and fourth pinion, as well as the first, second and third gear.
  • the fourth gear 92 thereby rotates slowly in the illustration according to FIG. 2 in a clockwise direction.
  • the rotation of the fourth gear 92 also moves the tappet pins 94 to 97 attached to it. As shown in Fig. 2 for the pin 97, the plunger pins thereby come into contact with the pin 50 fastened in the piston.
  • Fig. 2 for the pin 97
  • the pin 50 is drawn twice, namely with 50 'in its lower and with 50 in its upper end position.
  • the pin 50 is moved upwards along the cylinder axis 16 in the vertical direction.
  • the plunger pin and pin 50 disengage, as is shown for the pin 94.
  • another pin in FIG. 2 the pin 95, comes into contact with the limit switch 106, which outputs a pulse to the control device 102, whereby the power supply to the motor is interrupted and the entire drive mechanism is stopped.
  • the spring 54 is compressed by the movement of the pin 50 upwards.
  • the pin 50 with the piston 30 is now again slowly pressed down into the starting position.
  • the grease located in the recess 68 is displaced downward, as a result of which the ball valve 72, 74 opens and the grease is introduced into the lubrication bore of the machine part.
  • the piston 30 moves downward through the restoring force of the spring 54 until the lower limit of the piston rests on the shoulder 69 in the recess 68, which thus forms the end stop for the piston.
  • the device remains in this position until the next time pulse is triggered by the timer 104, whereby the next delivery stroke begins.
  • the torque applied by the motor is sufficient in any case not only to compress the spring 54, but also to bring the piston from the starting position into the delivery position, even at low temperatures and therefore with a higher viscosity .
  • This is also facilitated by the fact that the flow paths in the device are short and straight, and that the flow cross sections are relatively large, so that the flow resistance within the device is relatively low.
  • the housing is designed to be transparent overall, the fat supply and the function of the device can be checked from outside at any time.
  • the switching device 106 is provided, by means of which a conveying path can be triggered manually at any time. This enables an operator to initiate a conveying process when checking the device and to observe the conveying stroke through the transparent walls of the housing.
  • the choice of screw-in type has a particular advantage Stop limiter 60.
  • the length of the cylindrical recess 68 and thus the position of the stop shoulder 69, which forms the end stop, is chosen so that the volume ejected per delivery stroke corresponds to a predetermined volume. If, for example, a fat volume of 150 ml is to be conveyed out in the bag 10 with 200 conveying strokes (100 days with two conveying strokes at intervals of 12 hours), the cylindrical recess 68 and the stop shoulder 69 are dimensioned such that the conveying stroke volume is in each case 0.75 cm 3 is.
  • the length of the recess 68 is changed accordingly, so that the shoulder 69 is arranged further down (for a larger stroke) or further up (for a smaller stroke) than shown in the exemplary embodiment.
  • the stop limiter When changing the lubrication device, the stop limiter remains screwed into the machine part and only a new housing with the appropriate equipment is screwed onto the stop limiter. As a result, the delivery stroke volume once defined by the stop limiter cannot be changed when the lubricating device is replaced, so that setting errors by an operator are excluded.
  • the stroke limiters can be marked in different colors according to the delivery volume assigned to them, so that a glance at the stroke limiter shows which delivery stroke volume has been selected for the respective lubrication point, or in other words, in how many days the grease supply is supplied to the lubrication point.
  • an end point of the piston stroke movement is always the same, while the lower end point, and thus the piston stroke volume, by the stop limiter is changeable.
  • This enables precise metering of the delivery volume without having to intervene in the construction of the device itself.
  • the drive of the piston by the interaction of pin 50 and tappet pins 94 to 97 is independent of the position of the end stop within the design limits. This allows a simple and very precise metering of the delivery volume, which does not require any adjustment activity beyond the selection of the suitable stop limiter.
  • cover 2 and the base part 3 and parts not described in more detail are designed in a corresponding manner, as in the embodiment according to FIGS. 1 to 3.
  • a cylindrical extension 220 is formed on the lower part 204, in which an internal thread 221 is provided.
  • a tubular piece 219 adjoins this cylindrical extension, the upper part of which interacts either with a container as shown in FIG. 11 or with a container as shown in FIG. 2.
  • a seal 220 is arranged to seal the container from the inside of the cylindrical tube 119.
  • first annular contact surface 222 on which the seal 220 rests
  • second annular contact surface 224 on which a seal 225 rests.
  • a plate 228 is guided in a manner not shown, which acts as a plate valve.
  • a likewise cylindrical piston 230 is slidably mounted in the cylindrical tube 219.
  • This piston has a through bore 232 in its upper region, which is followed by a spherical recess 234.
  • This spherical recess receives a ball 236 which, in cooperation with the recess 234 and the through bore 232, acts as a ball valve.
  • a cylindrical compression spring 238 presses the ball 236 against the spherical recess 234 and thus blocks the passage 232.
  • the spring 238 is supported on a cylindrical pin 250, the function of which corresponds to the pin 50 in FIG. 1.
  • This cylindrical pin penetrates the piston 230 and is displaceably arranged in a longitudinal recess 240 of the cylindrical tube 219.
  • An O-ring 242 which is embedded in a corresponding recess in the piston and an O-ring 244 in the lower region, is used to seal the piston from the cylindrical tube.
  • a stroke or stop limiter 260 is provided, analogously to FIG. 1, which, in this illustration, is screwed into the lower part 204.
  • This stop limiter 260 has a first cylindrical projection 262, which is screwed into the lower part 204, and a second cylindrical projection 264, which is screwed into the usual lubricant supply bore of the machine.
  • a hexagon 266 is also provided for screwing in here.
  • the stop limiter has a continuous cavity 268 through which the lubricant can be conveyed to the lubrication point.
  • An annular stop 270 is provided to limit the stroke of the piston.
  • the cover part (not shown) (grease container) is in flow communication with the interior of the tube 219.
  • the grease is pressed in the direction of the tube 219 by a prestressing spring which acts with little force.
  • the pin 250 is raised in a corresponding manner by the motor and the transmission, as was explained in relation to the exemplary embodiment according to FIGS. 1 to 3.
  • the plate valve 228 is closed.
  • the lubricant located in the space below the plate valve and in the through-hole 232 exerts pressure on the ball 236, by means of which it is pressed downward and opens a space between the spherical recess 234 and the ball 236. This allows the grease to flow into the piston.
  • the ball valve closes and, as in the exemplary embodiment according to FIGS. 1 to 3, the piston is pressed by the biasing spring 54 in the direction of the stop limiter 260.
  • the grease in the piston is conveyed through the through hole 268 to the lubrication point.
  • the piston moves so far under the action of the spring down until the front edge of the piston abuts the stop 270.
  • different stop limiters can be provided, which then lead to different stroke lengths of the piston. Since the stop limiter remains on the machine when changing the lubrication device, the stop automatically determines how much lubricant flows to the lubrication point per unit of time.
  • FIG. 6 corresponds to the design of the embodiments according to FIGS. 1 to 3 and 5 except for the design of the cylindrical tube and the piston moving therein.
  • a cylindrical control rod 301 made of steel or plastic is movably guided within the cylindrical tube 300.
  • the cylindrical tube 300 In its upper region, the cylindrical tube 300 has a bore 303 which widens conically towards the center of the tube and through which the lubricant flows from the container into the cylindrical tube 300.
  • the conical wall of this bore also serves as a stop for a valve ring 304 with a circular cross section.
  • the piston 305 is shown in the representation according to FIG. 6 in two positions, namely in the left half during the suction stroke and in the right half during the delivery stroke.
  • the piston has a through bore 307, the diameter of which is larger than the diameter of the control rod 301.
  • This through bore 307 is closed by a valve ring 309, which is supported on the one hand on the inner wall of the piston and on the other hand on a ring 311 which is displaceably on the Control rod 301 is mounted.
  • a second ring 313 is provided in the upper region of the cylindrical tube and is fixed in position therewith, for example by webs or the like. This ring serves as a stop for the valve ring 304.
  • a lower stop 315 and an upper stop 316 are also arranged on the control rod.
  • three chambers are formed by the interaction of cylindrical tube, piston and valve rings, namely a first chamber 320, which is in flow communication with the interior of the grease container, a second chamber 321 and one third chamber 322.
  • the chamber 320 is closed by the valve ring 304 during the lifting movement, so that no grease can flow back into the container.
  • a lever 360 is provided which is rotatably mounted on an axis 362.
  • the lever 360 is connected to the axis 362 via a plate 364.
  • a recess 361 is provided which facilitates the engagement with the plunger 94.
  • the lever 360 is angled and connected at its angled end 370 to a stationary part via a tension spring 372. As can be seen from the illustration according to FIG. 8, the lever 360 is designed in the shape of an arc. This has the advantage that the lever 360 can be guided around the cylindrical tube 19 or 219.
  • a connecting part 400 is shown, as is shown as a stop limiter 60 in FIG. 1 or 260 in FIG. 5.
  • the connecting part 400 has a cylindrical extension 402 with an external thread, through which the connecting part can be screwed into a lubricant supply bore in a machine part.
  • the connecting part also has a (only partially shown) second cylindrical extension 403 with an external thread, through which the connecting part can be screwed into the lower part 404, which corresponds to the lower part 204 in FIGS. 5 and 4 in FIG. 1.
  • a switching device 406 is provided in the lower part 404, which has four microswitches 408 arranged next to one another.
  • the connecting part has an annular plate 410 on which a ring 412 is formed, which forms a projection with respect to the otherwise flat surface 414 of the ring 410.
  • the connecting part 400 is screwed into the machine and then a container with a lower part 404 is screwed onto the connecting part.
  • the ring 412 actuates the third microswitch (counted from the inside).
  • the control device which is constructed similarly to the control device in FIG. 4, queries the position of the switching device 406. Depending on the actuation of the microswitch, the time interval in which a stroke of the piston is triggered is changed.
  • the microswitch therefore offers the possibility of time control.
  • the position of microswitches 1 to 4 can correspond to one, two, three or four delivery strokes per 24 hours.
  • the connecting part 400 like the stop limiter 60 and 260, remains on the machine, the correct timing is automatically effected each time a new container is put on.
  • the correct delivery volume is automatically set when the container is placed on the machine.
  • FIGS. 10 and 11 A modification of the described embodiment with regard to the design of the fat container will now be described with reference to FIGS. 10 and 11.
  • the structure of this device corresponds, except for the design of the grease receptacle and the fat container, completely to the design according to FIGS. 1 to 4.
  • a ring with a sharp edge 23 is not screwed in or in the cylindrical tube piece 118 glued, but the pipe section 118 is provided in its upper region with an internal thread 122.
  • the bag 10 is made of polyethylene, but is not completely closed, but is on its underside 111 (in the illustration according to FIG. 11) with a cylindrical projection 112 is provided, which has an external thread 113.
  • the bag 110 with the external thread 113 is screwed into the internal thread 122 of the tubular connecting piece 118 when changing the grease.
  • This design has the advantage that it can be carried out with greater tightness than the design described in relation to the bag 10.
  • the tightness of the bag with respect to the tubular connecting piece 118 can also be increased by providing corresponding sealing rings and / or sealing edges, as are known to the person skilled in the art for sealing screwed pipe connections.
  • the design also facilitates the transportation of the grease bag 110, since the cylindrical extension 112 can be closed by a simple screw cap during transportation. Furthermore, this design also makes it easier to refill the fat container in a refill device provided with a corresponding thread.
  • the underside 111 of the fat container can be reinforced compared to the remaining parts of the fat container.
  • the motor is switched off by a limit switch on each delivery stroke.
  • a limit switch on each delivery stroke.
  • an electric motor designed as a stepping motor can also be used, which rotates after each pulse trigger until the gear 92 and thus the plunger pins have rotated exactly 90 ° further.
  • crank drive can also be realized which leads the piston to its top dead center.
  • a crank mechanism can be implemented, for example, by extending the pin 50 and arranging the gear 92 (and the corresponding parts of the drive) so that the axis of the gear is perpendicular to the axis of the pin 50. Only a tappet pin 94 is then attached to the gear 92, which is located in a lower position facing the stop limiter 60 when the piston rests on the shoulder 69. If the gearwheel is then rotated, the tappet pin 94 comes into contact with the cylindrical pin 50 and lifts the latter after a total rotation of 180 ° in its top dead center.
  • crank drive instead of the crank drive described above, the use of a conventional crank drive is also conceivable, in which e.g. on a crank pin fastened to the gear wheel 92 there is provided a crank which is arranged rotatably relative to the latter and which cooperates with the piston 30.
  • the known lubrication cans driven by gas discharge are usually designed as disposable lubrication cans which are thrown away after emptying
  • the lubrication device according to the invention can be reused as often as desired. This avoids unnecessary waste. Since the drive is electrical, no chemicals are released even during operation.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Transmission Devices (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
EP93909924A 1992-05-10 1993-05-09 Vorrichtung und Verfahren zum dosierten Zuführen von flüssigen oder viskosen Substanzen an eine Verbrauchsstelle Expired - Lifetime EP0640196B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4214827A DE4214827A1 (de) 1992-05-10 1992-05-10 Vorrichtung zum dosierten Zuführen von flüssigen oder viskosen Substanzen an eine Verbrauchsstelle
DE4214827 1992-05-10
PCT/EP1993/001131 WO1993023698A1 (de) 1992-05-10 1993-05-09 Vorrichtung zum dosierten zuführen von flüssigen oder viskosen substanzen an eine verbrauchsstelle

Publications (2)

Publication Number Publication Date
EP0640196A1 EP0640196A1 (de) 1995-03-01
EP0640196B1 true EP0640196B1 (de) 1997-04-09

Family

ID=6458211

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93909924A Expired - Lifetime EP0640196B1 (de) 1992-05-10 1993-05-09 Vorrichtung und Verfahren zum dosierten Zuführen von flüssigen oder viskosen Substanzen an eine Verbrauchsstelle

Country Status (7)

Country Link
US (1) US5509501A (ja)
EP (1) EP0640196B1 (ja)
JP (1) JP3506432B2 (ja)
AU (1) AU678354B2 (ja)
DE (2) DE4214827A1 (ja)
ES (1) ES2102647T3 (ja)
WO (1) WO1993023698A1 (ja)

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DE4422407C2 (de) * 1994-06-29 2001-07-05 Perma Tec Gmbh & Co Kg Schmierstoffspender
DE19503861C2 (de) * 1995-02-07 1999-07-22 Satzinger Gmbh & Co Verfahren zum dosierten Schmieren eines Kettentriebes, insbesondere eines Motorrad-Kettentriebes
WO1998038453A1 (en) * 1997-02-26 1998-09-03 Bijur Lubricating Corporation Positive displacement pump
DE10234881B4 (de) * 2002-06-19 2008-12-04 Perma-Tec Gmbh & Co Kg Dosiervorrichtung für Schmierstoff
KR100467417B1 (ko) * 2002-08-09 2005-01-24 송유철 윤활유 자동 주유장치
US20110253481A1 (en) * 2007-09-19 2011-10-20 Shih-Kuei Lin Automatic grease dispensing monitoring and alarm system
JP4898654B2 (ja) * 2007-12-27 2012-03-21 アイシン・エィ・ダブリュ株式会社 車両用動力伝達装置
JP4898653B2 (ja) * 2007-12-27 2012-03-21 アイシン・エィ・ダブリュ株式会社 車両用動力伝達装置
US20160231157A1 (en) * 2013-09-24 2016-08-11 Optimol Tribotechnik S.A. Metering device for delivery of a liquid or viscous substance
US20150114992A1 (en) * 2013-10-31 2015-04-30 Aktiebolaget Skf Grease gun with sensing capability and variable speed
EP4112879A1 (en) 2021-06-30 2023-01-04 Memolub International Device for delivering a fluid to a consumption point and associated method

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GB668363A (en) * 1944-04-11 1952-03-19 Emmerich Satzger Improvements in and relating to reciprocating lubricating pumps
US2856024A (en) * 1951-02-13 1958-10-14 Auto Research Corp Lubricant pump
US2792911A (en) * 1956-07-27 1957-05-21 Trabon Engineering Corp Divisional lubricant feeder
GB845933A (en) * 1957-03-15 1960-08-24 Severino Cavallini Improvements in or relating to automatic lubricating systems
US2899017A (en) * 1959-02-18 1959-08-11 Plews Mfg Co Metering device for liquid lubricant
US3071208A (en) * 1960-04-21 1963-01-01 Stewart Warner Corp Timer
US3187673A (en) * 1963-07-05 1965-06-08 Warren Petroleum Corp Pump apparatus
US3603432A (en) * 1968-12-11 1971-09-07 Waukee Eng Co Apparatus for periodically dispensing a liquid
DE2546704A1 (de) * 1975-10-17 1977-04-28 Micron Lubrotec Ateliers Elect Zentrale schmiervorrichtung
US4801051A (en) * 1984-03-26 1989-01-31 Nordson Corporation Flow control device for a fluid dispensing apparatus

Also Published As

Publication number Publication date
ES2102647T3 (es) 1997-08-01
DE4214827A1 (de) 1993-11-11
JPH08500416A (ja) 1996-01-16
EP0640196A1 (de) 1995-03-01
US5509501A (en) 1996-04-23
DE59306124D1 (de) 1997-05-15
AU678354B2 (en) 1997-05-29
AU4065793A (en) 1993-12-13
JP3506432B2 (ja) 2004-03-15
WO1993023698A1 (de) 1993-11-25

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